Transition from dielectric barrier discharge to microhollow discharge in parallel-plate electrodes with intercavity microholes

摘要

Parallel-plate electrodes with microholes were used to study microhollow discharges (MHDs) triggered by dielectric barrier discharge (DBD) generated by applying a low-frequency high ac voltage under atmospheric conditions. The results obtained reveal that MHD is ignited simultaneously with spiky DBD signals generated by applying two cycles of time-truncated sinusoidal waves. The discharge ignition voltage of MHD was about 1 kV lower for electrodes with intercavity holes than for electrodes with conventional straight holes. This reduction is due to the triggering effect of self-generated DBD.